Wheelchair ramp base



FIG. 1 is a front perspective view of the wheelchair ramp base;

FIG. 2 is a front end view of the wheelchair ramp base of FIG. 1;

FIG. 3 is a rear end view of the wheelchair ramp base of FIG. 1;

FIG. 4 is a right side elevational view of the wheelchair ramp base of FIG. 1;

FIG. 5 is a left side elevational view of the wheelchair ramp base of FIG. 1; and

FIG. 6 is a top view of the wheelchair ramp base of FIG. 1; and,

FIG. 7 is a bottom view of the wheelchair ramp base of FIG. 1.

The broken line showing of elements in the figures is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for a wheelchair ramp base, as shown and described. 